Virtual cartels, oligopolistic structures Global networks require global technical standards ensuring the compatibility of systems. Being able to define such standards makes a corporation extremely powerful. And it requires the suspension of competitive practices. Competition is relegated to the symbolic realm. Diversity and pluralism become the victims of the globalisation of baroque sameness. The ICT market is dominated by incomplete competition aimed at short-term market domination. In a very short time, new ideas can turn into best-selling technologies. Innovation cycles are extremely short. But today's state-of-the-art products are embryonic trash. According to the Computer and Communications Industry Association, Microsoft is trying to aggressively take over the network market. This would mean that AT&T would control 70 % of all long distance phone calls and 60 % of cable connections. AOL and Yahoo are lone leaders in the provider market. AOL has 21 million subscribers in 100 countries. In a single month, AOL registers 94 million visits. Two thirds of all US internet users visited Yahoo in December 1999. The world's 13 biggest internet providers are all American. AOL and Microsoft have concluded a strategic cross-promotion deal. In the US, the AOL icon is installed on every Windows desktop. AOL has also concluded a strategic alliance with Coca Cola.

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Expert system Expert systems are advanced computer programs that mimic the knowledge and reasoning capabilities of an expert in a particular discipline. Their creators strive to clone the expertise of one or several human specialists to develop a tool that can be used by the layman to solve difficult or ambiguous problems. Expert systems differ from conventional computer programs as they combine facts with rules that state relations between the facts to achieve a crude form of reasoning analogous to artificial intelligence. The three main elements of expert systems are: (1) an interface which allows interaction between the system and the user, (2) a database (also called the knowledge base) which consists of axioms and rules, and (3) the inference engine, a computer program that executes the inference-making process. The disadvantage of rule-based expert systems is that they cannot handle unanticipated events, as every condition that may be encountered must be described by a rule. They also remain limited to narrow problem domains such as troubleshooting malfunctioning equipment or medical image interpretation, but still have the advantage of being much lower in costs compared with paying an expert or a team of specialists.

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